Detecting the relationship between competitive intensity and firm product line length: Evidence from the worldwide mobile phone industry

2013 ◽  
Vol 35 (9) ◽  
pp. 1398-1409 ◽  
Author(s):  
Claudio Giachetti ◽  
Giovanni Battista Dagnino
Keyword(s):  
Mobile Phone ◽  
Line Length ◽  
Product Line ◽  
Competitive Intensity ◽  
The Relationship

The effects of shyness and loneliness on cell phone dependence in college students

2021 ◽  
Vol 49 (9) ◽  
pp. 1-9
Author(s):  
Yan Chen
Keyword(s):  
College Students ◽  
Mobile Phone ◽  
Cell Phone ◽  
Short Form ◽  
Mediating Effect ◽  
Special Focus ◽  
Loneliness Scale ◽  
Mobile Phone Addiction ◽  
The Relationship ◽  
Shed Light

I explored the relationships among shyness, loneliness, and cell phone dependence (CPD) in college students, with a special focus on the mediating effect of loneliness in the relationship between shyness and CPD. Participants were 593 students recruited from a college in Henan, China, and they completed the Cheek and Buss Shyness Scale, the UCLA Loneliness Scale–Short Form, and the Mobile Phone Addiction Index. The results show that shyness was significantly correlated with both loneliness and CPD, and that loneliness partially mediated the effect of shyness on CPD. These findings shed light on how shyness predicts CPD and have implications for preventing CPD in college students.

scholarly journals Structural Relationship among Mobile Phone Dependence, Self-Efficacy, Time Management Disposition, and Academic Procras-tination in College Students

2021 ◽  
Author(s):  
Peng Sheng Chen ◽  
Jing Li ◽  
Seung-Yong Kim
Keyword(s):  
Factor Analysis ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Time Management ◽  
Self Efficacy ◽  
Academic Procrastination ◽  
Self Regulated Learning ◽  
Regulated Learning ◽  
Negative Effect ◽  
The Relationship

Background: We aimed to investigate the relationship among mobile phone dependence, self-efficacy for self-regulated learning, time management disposition, and academic procrastination in Chinese students majoring in physical education. In addition, we explored the mediating roles of self-efficacy for self-regulated learning and time management disposition in the relationship between mobile phone dependence and academic procrastination. Methods: We adopted a random sampling method to identify 324 physical education majors at five universities in Shaanxi Province, China in 2020. Data were analyzed via exploratory factor analysis, confirmatory factor analysis, correlation analysis, structural equation model analysis, and path analysis. Results: Mobile phone dependence had significant positive effects on academic procrastination (P<0.001) and self-efficacy for self-regulated learning (P<0.05) but a significant negative effect on time management disposition (P<0.001). Self-efficacy for self-regulated learning had a significant positive effect on academic procrastination (P<0.001), while time management disposition had a significant negative effect on academic procrastination (P<0.01). Notably, self-efficacy for self-regulated learning and time management disposition mediated the relationship between mobile phone dependence and academic procrastination (P<0.05). Conclusion: In addition to its direct effect on academic procrastination, mobile phone dependence exerts an indirect effect via time management disposition and self-regulated learning efficacy. Reducing students’ dependence on mobile phones is necessary for attenuating academic procrastination on university campuses. Thus, universities should aim to restrict the use of mobile phones in the classroom, actively cultivate students’ confidence in their self-regulated learning ability, and educate them regarding appropriate time values.

scholarly journals Relationship Between Weekly Patterns of Caloric Intake and Reported Weight Loss Outcomes: Retrospective Cohort Study (Preprint)

2017 ◽  
Author(s):  
Christine Hill ◽  
Brian W Weir ◽  
Laura W Fuentes ◽  
Alicia Garcia-Alvarez ◽  
Danya P Anouti ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Weight Loss ◽  
Linear Regression ◽  
Mobile Phone ◽  
Body Mass ◽  
Caloric Intake ◽  
Body Mass Index Category ◽  
Obese Adults ◽  
Weight Loss Outcomes ◽  
The Relationship

BACKGROUND Although millions of overweight and obese adults use mobile phone apps for weight loss, little is known about the predictors of success. OBJECTIVE The objective of this study was to understand the relationship between weight loss outcomes and weekly patterns of caloric intake among overweight and obese adults using a mobile phone app for weight loss. METHODS We examined the relationship between weekly patterns of caloric intake and weight loss outcomes among adults who began using a weight loss app in January 2016 and continued consistent use for at least 5 months (N=7007). Unadjusted and adjusted linear regression analyses were used to evaluate the predictors of percentage of bodyweight lost for women and men separately, including age, body mass index category, weight loss plan, and difference in daily calories consumed on weekend days (Saturday and Sunday) versus Monday. RESULTS In adjusted linear regression, percentage of bodyweight lost was significantly associated with age (for women), body mass index (for men), weight loss plan, and differences in daily caloric intake on Mondays versus weekend days. Compared with women consuming at least 500 calories more on weekend days than on Mondays, those who consumed 50 to 250 calories more on weekend days or those with balanced consumption (±50 calories) lost 1.64% more and 1.82% more bodyweight, respectively. Women consuming 250 to 500 calories or more than 500 calories more on Mondays than on weekend days lost 1.35% more and 3.58% more bodyweight, respectively. Compared with men consuming at least 500 calories more on weekend days than on Mondays, those consuming 250 to 500 calories or more than 500 calories more on Mondays than on weekend days lost 2.27% and 3.42% less bodyweight, respectively. CONCLUSIONS Consistent caloric intake on weekend days and Mondays or consuming slightly fewer calories per day on Mondays versus weekend days was associated with more successful weight loss. CLINICALTRIAL ClinicalTrials.gov NCT03136692; https://clinicaltrials.gov/ct2/show/NCT03136692 (Archived by WebCite at http://www.webcitation.org/6y9JvHya4)

scholarly journals The relationship between nomophobia and trait anxiety, basic psychological needs, happiness in adolescents

2020 ◽  
Vol 17 (2) ◽  
pp. 535-547
Author(s):  
Oğuzhan Yıldırım ◽  
Özcan Sezer
Keyword(s):  
Mobile Phone ◽  
Trait Anxiety ◽  
Short Form ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Psychological Needs ◽  
English Summary ◽  
Basic Psychological Needs ◽  
Quantitative Research Methods ◽  
The Relationship

The concept of nomophobia was formed with the abbreviation of “No Mobile Phone Phobia”. Nomophobia means that people experience anxiety and fear when they are deprived of their mobile phones. The aim of this study was to examine the relationship between adolescents' nomophobia levels and trait anxiety, basic psychological needs and happiness. This study is a relational screening model which is one of the quantitative research methods. 561 adolescents (349 female and 212 male) consisted the study group. “Nomophobia Scale (NMP-Q)”, “Trait Anxiety Inventory”, “The Basic Psychological Need Scale” and “Short Form of the Oxford Happiness Questionnaire” were used to collect data in the study. Pearson correlation coefficientwas calculated to reveal the relationship between the variables and multiple linear regression analysis which is one of the predictive techniques, were used. According to the results of the analysis, there was significant relation between nomophobia and basic psychological needs satisfaction, trait anxiety, happiness.It was found that the predictor variables together accounted for 10% the variance. According to the significance tests of the regression coefficients, only traitanxiety was significant predictor of nomophobia. ​Extended English summary is in the end of Full Text PDF (TURKISH) file.   Özet “No Mobile Phone Phobia” kelimelerinin kısaltmasıyla ortaya çıkan nomofobi kavramı kişilerin cep telefonlarından yoksun kaldıkları durumlarda kaygı ve korku yaşamaları anlamına gelmektedir. Bu araştırmanın amacı ergenlerin nomofobi düzeyleri ile sürekli kaygıları, temel psikolojik ihtiyaçları ve mutluluk düzeyleri arasındaki ilişkiyi incelemektir. Bu araştırmada nicel araştırma yöntemlerinden ilişkisel tarama modeli kullanılmıştır. Çalışma grubunu 349’u kız 212’si erkek olmak üzere toplamda 561 ergenoluşturmuştur. Araştırmanın verileri “Nomofobi Yaygınlığı Ölçeği”, “Sürekli Kaygı Ölçeği”, “Temel Psikolojik İhtiyaçlar Ölçeği”  ve “Oxford Mutluluk Ölçeği Kısa Formu” ile toplanmıştır.  Araştırmada değişkenler arasındaki ilişkiyi ortaya koymak amacıyla Pearson korelasyon katsayısı hesaplanmış ile yordayıcı tekniklerden çoklu doğrusal regresyon analizi kullanılmıştır. Analiz sonuçlarına göre nomofobi ile sürekli kaygı, temel psikolojik ihtiyaçlar ve mutluluk düzeyleri arasında anlamlı ilişkiler olduğu görülmüştür. Yapılan çoklu doğrusal regresyon analizine göre sürekli kaygı, temel psikolojik ihtiyaçlar ve mutluluk değişkenlerinin birlikte nomofobinin yaklaşık olarak %10’unu açıkladığı tespit edilmiştir. Regresyon katsayılarının anlamlılık testlerine göre yalnızca sürekli kaygının nomofobiyi anlamlı şekilde yordadığı belirlenmiştir.

Life in the Pocket - The Ambient Life Project

2011 ◽  
pp. 105-110
Author(s):  
Fabian Hemmert
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Response Times ◽  
Qualitative Studies ◽  
Life Project ◽  
Relationship Of ◽  
The Relationship

The work reported in this article is concerned with the relationship of the user to his mobile phone, especially with the habit of checking the mobile phone for missed events. We present two qualitative studies that have been conducted with mobile phones, symbolizing their status through life-like movements - breath and pulse. It was to be determined whether a continuous, rythmic and life-like signal would be eligible to ambiently express the phone’s state. The results of the studies were mixed, as some users were simply annoyed by the permanent actuation, while others appreciated the functionality. The response times to occured events seem to be appropriate for an ambient display. The studies raised further questions, regarding the psychological and physiological consequences of such technology.

Growing Up Wireless

2008 ◽  
pp. 99-125
Author(s):  
Letizia Caronia
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Mobile Communication ◽  
Cultural Models ◽  
Intergenerational Relationships ◽  
Communication Technologies ◽  
Growing Up ◽  
Social Phenomena ◽  
The Relationship

This chapter illustrates the role of the mobile phone in the rise of new cultural models of parenting. According to a phenomenological theoretical approach to culture and everyday life, the author argues that the relationship between technologies, culture, and society should be conceived as a mutual construction. As cultural artefacts, mobile communication technologies both are domesticated by people into their cultural ways of living and create new ones. How are mobile phones domesticated by already existing cultural models of parenting? How does the introduction of the mobile phone affect family life and intergenerational relationships? How does mobile contact contribute in the construction of new cultural models of “being a parent” and “being a child”? Analysing new social phenomena such as “hyperparenting” and the “dialogic use” of mobile phones, the author argues upon the role of mobile communication technologies in articulating the paradoxical nature of the contemporary cultural model of family education.

scholarly journals The Relationship between in-Vehicle Technologies and Self-Regulation among Older Drivers

Geriatrics ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 23
Author(s):  
Austin M. Svancara ◽  
Leon Villavicencio ◽  
Tara Kelley-Baker ◽  
William J. Horrey ◽  
Lisa J. Molnar ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Self Regulation ◽  
Older Drivers ◽  
Left Turn ◽  
Driving Behaviors ◽  
Regulatory Behavior ◽  
Vehicle Technologies ◽  
Bad Weather ◽  
Reported Data ◽  
The Relationship

The study sought to understand the relationship between in-vehicle technologies (IVTs) and self-regulatory behaviors among older drivers. In a large multi-site study of 2990 older drivers, self-reported data on the presence of IVTs and avoidance of various driving behaviors (talking on a mobile phone while driving, driving at night, driving in bad weather, and making left turns when there is no left turn arrow) were recorded. Self-reports were used to identify whether avoidance was due to self-regulation. Hierarchical logistic regressions were used to determine whether the presence of a particular IVT predicted the likelihood of a given self-regulatory behavior after controlling for other factors. Results suggest that the presence of Integrated Bluetooth/Voice Control systems are related to a reduced likelihood of avoiding talking on a mobile phone while driving due to self-regulation (OR = 0.37, 95% CI = 0.29–0.47). The presence of a Navigation Assistance system was related to a reduced likelihood of avoiding talking on a mobile phone while driving (OR= 0.65, 95% CI = 0.50–0.84) and avoiding driving at night due to self-regulation (OR = 0.80, 95% CI = 0.64–1.00). Present findings suggest in-vehicle technologies may differently influence the self-regulatory behaviors of older drivers.

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